31results about How to "Solve cumulative problems" patented technology

The invention provides a processing method of electroplating wastewater containing cyanogens and chrome, comprising the following steps of: regulating the pH value of mixed electroplating wastewater containing cyanogens and chrome; introducing O3 into an oxidation pond; adding hydrazine hydrate into a reduction pond, and introducing the wastewater into a precipitator after reducing the wastewater; discharging 10-30 percent of clear solution reaching a standard after precipitation, and enabling 70-90 percent of clear solution to flow into a middle wastewater pond; regulating the pH value of the wastewater in the middle wastewater pond, and adding NaHSO3; introducing the wastewater in the middle wastewater pond into a medium filter and a precision filter; introducing the outlet water of theprecision filter for first-segment nanofiltration processing; enabling the concentrated water in the first-segment nanofiltration to enter reverse osmosis-segment processing; enabling the concentrated water in the reverse osmosis segment to finally enter second-segment nanofiltration, and enabling the permeation liquid of the second-segment nanofiltration to return to the middle wastewater pond for circular processing; and enabling the permeation concentrated water of the second-segment nanofiltration to return to an original water tank for circular processing. The method can be used for processing the mixed electroplating wastewater containing cyanogen and chrome, other heavy metals and the like, and not only can realize higher recycle rate and lower the cost, but also can reduce energy consumption.

The invention discloses an external blocking type cutter for pipeline cutting. The external blocking type cutter is characterized by structurally comprising a driver, a blocking ring, clamps, a blocking part and a cutting slide path, wherein a cutter is mounted in the cutting slide path; the cutting slide path is integrally formed with the blocking ring; the four clamps are uniformly and mechanically connected on the blocking ring, and are matched with pipelines; the blocking ring is formed by fixing two same semicircular structures through the blocking part; the driver is mounted on the blocking ring to drive the cutter; the inner part of the driver is driven by the motor; the motor is mounted and fixed through a pedestal; the motor is matched with a ventilation opening and a radiating fan, and a first partition plate, a movable inclined plate, a connecting rod, a pushing-pulling body, a second partition plate, a sealing part and a spring shaft are arranged in the ventilation opening;the movable inclined plate is mounted in the ventilation opening through a guide wheel, and can be movably in the form of a right trapezoid; a static inclined plate is closer to the radiating fan, sothat dust taken in can be adsorbed in a static mode, and therefore, taken-in dust is not greatly accumulated on the position, close to the motor, of the ventilation opening, and electrical harm is avoided.

The embodiment of the invention discloses a flow guiding and heat dissipation device. A technical problem of heat accumulation between devices in a cabinet is solved. The flow guiding and heat dissipation device comprise an air charging flow guiding device, an air discharging flow guiding device and a fan module. The air charging flow guiding device and the air discharging flow guiding device are installed on a square hole strip of the cabinet through lugs. The devices are installed on the square hole strip of the cabinet through a lug. The fan module is installed on the top of the cabinet.

The invention relates to an evaporative transportation device for metal organic chemical source liquid, which is used to realize long-term stable transportation of metal organic chemical source liquid. An evaporation transport device for metal organic chemical source liquid, including a liquid injection device and a thermal evaporation gasification device. The evaporation and transportation device for the metal organic chemical source liquid of the present invention can send the liquid metal organic source to the thermal evaporation gasification device through the liquid injection device for a long time with stable speed and accurate ratio, and complete film deposition in the MOCVD reaction chamber, which can To meet the needs of industrialized long-term continuous, stable and rapid production.

The invention discloses alginic acid envelope sustained-release urea with a urease inhibiting effect and a preparation method thereof. The preparation method comprises the following steps of: extracting seaweed or fermented seaweed by using aqueous solution prepared from one or two of sodium hydroxide, potassium hydroxide, sodium carbonate and potassium carbonate; adding water-soluble macromolecules into the extracting solution to dissolve the macromolecules uniformly; adjusting the pH value to be 8.5 by using an organic acid to obtain an envelope material; coating the envelope material on the surfaces of urea particles uniformly; drying instantly with hot wind; and cooling to room temperature by using a fluidized bed to obtain the alginic acid envelope sustained-release urea. The alginic acid envelope sustained-release urea has the advantages of double effects of urease inhibition and sustained release, capacities of effectively improving the utilization ratio of the urea and effectively reducing the loss caused by rain erosion in soil, no toxicity and no harm, stimulation effect on the growth of plants and low price.

The invention relates to a zinc-nickel flow battery, in particular to a negative electrode of a zinc-nickel flow battery, in which zinc oxide is attached to the surface of the substrate; the specific preparation process is as follows: the substrate is immersed in the In the soluble zinc salt solution for 10-60min; after drying at 60-80°C, transfer to a tube furnace, and burn at 300-400°C for 1-5h in an oxygen atmosphere; obtain the required negative electrode. The invention solves the problem of zinc accumulation in the zinc negative electrode.

The invention provides a detection method for meter constant test by adopting the standard meter method, which includes connecting the standard meter with the electric energy meter under inspection; applying the reference voltage of the electric energy meter under inspection to the standard meter, and reading the current normal voltage The active total electric energy is used as the initial electric energy value; apply the maximum current of the tested electric energy meter to the standard meter, set the phase angle to 0°, and start the test after the power output of the standard meter is stable; accumulate the electric energy value of the standard meter, when When the accumulated electric energy value of the standard meter is within the preset range, adjust the phase angle according to the preset phase shift angle; continue to accumulate the electric energy value of the standard meter, and when the accumulated electric energy value of the standard meter is not less than the preset standard travel threshold, read the detected The current total forward active energy of the electric energy meter is used as the termination electric energy value; calculate the difference between the termination electric energy value and the initial electric energy value of the electric energy meter under inspection, and calculate the error γ of the electric energy meter under inspection; if the γ does not exceed the basic error limit, it is pass, otherwise fail.

The invention discloses an online tank edge recovery and circulation method for a plastic electroplating coarsening solution and a using system of the online tank edge recovery and circulation method.The method comprises the following steps that a low-concentration coarsening recovery solution is drained into a multistage decompression evaporator, a high-concentration coarsening recovery solutionand evaporation condensate are extracted, the evaporation condensate is drained into a high-level water storage tank, the high-concentration coarsening recovery solution is pumped into an organic carbon impurity removal aeration system, an organic carbon deslagging agent is added, then aeration is carried out, organic carbon is removed, then filtering and discharging into an electrolytic bath arecarried out, trivalent chromium ions are electrolytically removed, and finally discharging into a concentrated solution storage tank or a coarsening tank is carried out. The using system comprises the multistage decompression evaporator. The multistage decompression evaporator is connected with coarsening solution recovery tanks, the high-level water storage tank and the organic carbon impurity removal aeration system, the organic carbon impurity removal aeration system is connected with the electrolytic bath, and the electrolytic bath is connected with the coarsening tank and the concentrated solution storage tank. According to the online tank edge recovery and circulation method, organic carbon and trivalent chromium in the coarsening solution can be efficiently removed, and the problems of online recovery and recycling of the plastic electroplating coarsening solution can be solved at low cost.

The invention discloses a biomembrane electrode coupled artificial wetland reactor and a sewage treatment method thereof. The biomembrane electrode coupled artificial wetland reactor adopts the upper layer of the artificial wetland with graphite as the anode, and the lower anaerobic environment with steel mesh and activated carbon as the composite cathode. For sewage treatment, the denitrification and microcystin removal efficiency of the reactor can be enhanced by introducing a certain microcurrent. The invention has the advantages of simple device, convenient operation and management, good treatment effect and small occupied area, and can remarkably improve the treatment effect of sewage containing nitrogen and microcystin.

The embodiment of the invention discloses a flow guide and heat dissipation device, which is used to solve the technical problem of heat accumulation between devices in a cabinet. An air guide and heat dissipation device according to an embodiment of the present invention includes: an air inlet guide device, an air outlet guide device, and a fan module; the air inlet guide device and the air outlet guide device are installed in the cabinet through hanging ears on the square hole bar; the device is installed on the square hole bar of the corresponding cabinet through the hanging ears; the fan module is installed on the top of the cabinet.

Provided are an emulsion liquid membrane for extracting copper and cyanide in cyanide waste water and a use method thereof.Raw materials are composed of an oil phase and a water phase, and the raw materials of the oil phase comprise an extraction carrier, a mass transfer modifying agent, a diluent and an emulsifying agent or comprise an extraction carrier, a mass transfer modifying agent, a stabilizer, a diluent and an emulsifying agent.The use method comprises the steps that the emulsion liquid membrane used for extracting copper and cyanide in the cyanide waste water is mixed with cyanide-containing waste water, mechanical stirring is conducted for dispersing and extracting, and standing is conducted for phase separation; 2, an enriched emulsion obtained after phase separation is conducted is demulsified, a regeneration oil phase and an enriched water phase are obtained, and copper and cyanide are recycled from the enriched water phase.By means of the use method, the accumulation problem of copper in minerals in cyanide leaching liquid in the cyanide gold leaching process is effectively solved, the recycling problem of cyanide waste liquid is also solved, and dual value of improving economic benefit and promoting environmental protection is achieved in the cyanide-containing waste water treatment process.

The invention discloses an indoor robot positioning method by combining a visual odometer and a physical odometer. The method is characterized in that by collecting the images, ORB characteristics are extracted for image coupling, camera position and pose estimation, and closed loop detection to accurately position the robot. The visual odometer is added in a known environment for closed loop detection on the robot, the accumulated error of the physical odometer based on particle filter is eliminated, the global error of the odometer is changed to staggered accumulation, and an closed is established based on the above process. The visual odometer is combined for effectively solving the problem of error accumulation of the physical odometer, and realizes automatic positioning and accurate re-positioning of the robot in the known environment, the increased computation burden is not large, efficiency and real-time performance are guaranteed, indoor navigation requirement can be preciously satisfied, and the indoor robot positioning method is effective for solving the problem of inaccurate positioning of the robot under large environment in the prior art.

The invention relates to a method for restoring the capacity of an all-vanadium redox flow battery, in particular to solve the problem of battery capacity attenuation due to the accumulation of pentavalent vanadium at the positive electrode during the long-term operation of the all-vanadium redox flow battery. This method can add an appropriate amount of ammonium ferrous sulfate to the positive electrode electrolyte in any process of charging and discharging the battery. Tetravalent vanadium ions restore battery capacity. The invention solves the problem of accumulation of pentavalent vanadium during long-term operation of the battery by adding an appropriate amount of ammonium ferrous sulfate as a reducing agent in the positive electrolyte, so as to finally solve the problem of capacity fading, and realize long-term stable operation of the battery and high efficiency of the electrolyte use. The invention has the advantages of simple process, convenient operation, simple and easy-to-obtain raw materials, low cost and remarkable effect.